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The study found that thioglycolic acid breaks down hair bonds more consistently than l-cysteine, which is less damaging to hair.

Hair's strength and flexibility come from its protein structure and molecular interactions.

Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.

Antler velvet hair and body hair of red deer have different structures that help with protection and insulation.

Hair in mammals likely evolved from glandular structures, not scales.

The G60S Connexin43 mutation causes hair growth issues and poor hair quality in mice, similar to human ODDD patients.

Hair from people with seborrheic dermatitis is thicker scaled, more damaged, and thinner than healthy hair, and atomic force microscopy can help monitor the condition.

Chemical and physical treatments like bleaching, dyeing, and UV radiation damage both Caucasian and Afro-ethnic hair.

Corkscrew and cigarette-ash-shaped hairs in tinea capitis are caused by internal hair degradation and external resistance.

The cell membrane complex in mammalian hair has three distinct types with different structures and chemical properties.

Holes in mature hair are likely caused by the removal of substances during hair care.

The Cell Membrane Complex in hair has both water-attracting and water-repelling layers.

Micrografts promote hair growth in androgenetic alopecia treatment.

Heat damages hair, with Asian hair losing more protein than Caucasian hair.

The study found that hair fragility in Pili annulati may be caused by cavities and damage within the hair shafts.

Human hair absorbs calcium and magnesium from tap water, affecting its structure and styling properties.

Hair coloring increases copper and calcium uptake, damaging hair and reducing shine.

The study found that a polymer treatment changes the charge on hair surfaces, making bleached hair smoother and less porous.

White hair has less lipid content and absorbs water differently than brown hair.

The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.

Curly hair breaks due to mechanical damage and environmental factors, not chemical makeup, and needs ongoing care to prevent breakage.

Explosions don't stop hair proteins from being used to identify people.

Melanin density affects hair color, and this method can help in cosmetic assessments and diagnosing hair diseases.

The conclusion is that substances can penetrate hair fibers through multiple pathways, including both the cell membrane complex and the non-keratinous parts.

Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.

Stretching damages Caucasian hair's structure more easily than Asian hair.

The torsional method effectively evaluates hair damage and the performance of hair care ingredients.

Lipids are crucial for healthy hair, protecting it from damage and breakage.

Bleaching hair increases cysteic acid levels in a predictable way.

Hydrogenated palm oil repairs and conditions damaged hair by preventing swelling.